Jean-Marc Leclerc

Practice Focus

Jean-Marc is a partner in our litigation department who specializes in commercial litigation and class actions. He represents franchisors and franchisees and has been involved in cases involving the automobile industry (on behalf of dealers and manufacturers). He is the past chair of the Ontario Bar Association’s class action section.

Jean-­Marc has acted in class action cases in many different areas of the law. He brings a unique approach to class actions, having acted for both defendants and plaintiffs. He has a special interest in privacy class actions.

Jean-­Marc has acted in commercial litigation matters and has been retained to argue pro bono matters on behalf of the Canadian Civil Liberties Association.

He has taught appellate advocacy at Queen’s University in Kingston. He is a former law clerk at the Federal Court of Appeal and at the Supreme Court of Canada.

Key class action cases

Counsel in certification motions in dozens of auto part antitrust cases (ongoing) stemming from an international antitrust investigation.

Hopkins v. Kay, 2015 ONCA 112 – Successfully defended the right of patients to sue hospitals for privacy breaches. This important appeal decision has garnered significant interest and was the front page story on Canada’s largest circulation daily newspaper.

Infineon Technologies AG v. Option consommateurs, 2013 SCC 59 [part of a class action trilogy of cases, which included Pro­Sys Consultants Ltd. v. Microsoft Corporation, 2013 SCC 57]. Appeared on behalf of an intervenor at the Supreme Court of Canada in the most significant class action decisions heard by the Court since 2001.